Now that TLEs are available for stage-2, can anybody work out quick&dirty ground visibility locations/times/directions for early revs, to seek out serendipitous visual sightings related to fuel dump and other post-insertion dynamic events.

Thanks. I didn't know about the DANDE adapter (is there a paper or something that describes this?)And I don't know when POPACS and CUSAT do their thing - was guessing POPACS separation happens shortlyafter ejection but CUSAT is commanded at a later date.

In any case, we now have 20 objects cataloged, so I wonder if the extra ones are debris associated with the secondstage restart problem.

It's worth posting this video taken from the ground, as it shows the first stage firing in puffs shortly after stage separation - our first look at the first stage deceleration burns! (from 4:00 onwards)

I'm of the mind that those mystery puffs we are seeing in that video are not first stage related, but are rapidly expanding gas from the exhaust of the MVac on the second stage. Based on when the call over countdown net referenced the relight of the first stage engines, that happened much later than this.

I notice F9 v1.1 staging is at about T+ 2:54. A few seconds before staging occurs flight control announces the rocket is at 61 km altitude, 45 km downrange and moving at 1.8 km/s. At about T+ 8:00 they announce "First stage is ... relighting at this time." Is the T+ 8:00 burn the supersonic retro burn or the landing burn? What is the time is the burn that wasn't announced?

I'm of the mind that those mystery puffs we are seeing in that video are not first stage related, but are rapidly expanding gas from the exhaust of the MVac on the second stage. Based on when the call over countdown net referenced the relight of the first stage engines, that happened much later than this.

From the SpaceX broadcast this morning you can actually see the RCS system firing on S1 right after separation.